Car stop



Feb. 13,1934." P- L EN 947,354

GAR STOP Filed March 51, 19:51 3' Shets-Sheef -1 Invenlor 6 /06 .SZ erFMWZZew Feb. 13, 1934. c, P, MULLEN CAR STOP 3 Sheets-Sheet Filed March 31, 1931 la s Inventor ksz erzflvizezz HUM A tlomey Patented Feb. 13, 1934 UNITED STATES PATENT OFFICE CAR STOP Chester Patrick Mullen, Montgomery, W. Va. Application March 31, 1931. Serial No. 526,743 2 Claims. (01.104-257) This invention appertains to new and useful improvements in devices adapted to be mounted on railroad tracks to act as stops for rolling stock.

An important object of this invention is to provide a railroad rolling stock track block which is capable of being moved toa position for stopping rolling stock, or to a position permitting the passage of rolling stock.

Another important object of the invention is to provide a stop block of the character mentioned which is capable of quick manipulation and which in use will be efficient and practical.

Other important objects and advantages of the invention will become apparent to the reader of the following specification.

In the drawings:

Figure 1 represents a side elevational view of the preferred form of the invention.

Fig. 6 represents a sectional view taken substantially on the line 66 of Fig. 3..

Fig. '7 represents a fragmentary top plan view of a modification of the invention.

Fig. 8 represents a fragmentary side elevational view of the modification shown in Fig. 7. Fig. 9 represents a side elevational view of the key shown employed in Fig. 7.

Fig. 10 represents a fragmentary detailed sectional view disclosing diagrammatically the alarm circuit.

Referring to the drawings wherein like numerals designate like parts, it can be seen in Fig. 1, that numeral 5 represents the track of a railway which is disposed over the U-shaped base 6.

Mounted upon one end of the base 6 is the guide 7 through which the screw shaft 8 is journaled. The outer end of the shaft 8 is provided with a head 9 having an opening 10 therein through which a bar can be inserted to facilitate rotation of the shaft.

This shaft 8 is threaded through a block 11 which is flanged as at 12 and apertured to receive the screws 13 which connect the block to the base 6. The top side of the block 11 is grooved as is the under side of the clamp plate :114 to accommodate the shaft 15 which is pro- Fig. 2 represents a top plan view of the strucvided with a head 16 on each end thereof. The plate 14 is secured to the block 11 by screws 17.

The inner end of the screw is swivelly connected to a wedge-shaped block 18 as at 19. This block 18 engages the base plate portion of the rail 5, lugs 20 on the base 6 engaging against the rear base portion of the rail 5 at the opposite edge portion thereof in respect to the edge portion engaged bythe block 18.

Numeral 21 represents the abutment body which has a cut-out portion 22 conforming in contour, to the shape of one side of the rail, the side thereof projecting over the said surface of the rail being curved as clearly shown in Figs. 1 and 2. The opposite side of this abutment 21 is provided witha recess 23 therein for receiving the cylindrical shell section 24. The cylindrical shell section 25 is of smaller diameter than the section 24, and has its outer end engaged within the annular flange 26 on the end wall 27.

Extending inwardly from the end wall 2'7 and being disposed upon'the base 6 is the body 28, within which the dove-tailed groove is located for receiving a sliding detent 29 depending from the abutment 21. -9-

A guide 30 receives the outer end of the bar 31 whichis threadedly engaged into the abutment 21 as at 32, the outer end of the bar 31 being alined with an opening inthe end wall 27,.through which it can pass when not obstructed by the slide plate 33, the latter being slidable in the carrier 34 and connectedto the end wall 27 by the chain 35 to prevent loss thereof. The end wall 2'? is braced by the brace bar 35' at each side of the base 6.

, Obviously, when the base 6 is properly secured to the rail 5, the abutment 21 will assume the position substantially shown in Fig. 3 as well as in Fig. 1. Providing the plate 33 is in the position shown in Fig. 3, a car wheel will engage the abutment 21 and cannot ride past the same. However, when the plate 33 is lifted from the carrier 34, the bar 31 is free to slide through the opening and through the carrier against the action of the spring 36 which. is interposed between the abutment 21 and. end wall 27.

The shaft 15 mounted upon the block 11 (shown in Figs. 1 and 2) is to accommodate the swinging abutment shown in the modified form of the invention, should these swinging abutments be desirable in conjunction with the slidable abutment 21.

Now referring to Figs. 7, 8 and 9, it can be seen that upon the head 16 at each end of the shaft 15 a swingable abutment 37 is mounted, the same being provided with a curved free end portion for disposition along the rail as shown in Fig. 7, so that when the same is free to move, the pressure of the car wheel against the curved surface thereof will cause the same to swing backwardly away from the rail.

As can be clearly seen in Fig. 7, the shaft 15 is provided at each end of the plate 15, with a polygonal-shaped enlargement 38 and slidable on either end portion of the shaft 15 is the collar 39 having the polygonal-shaped opening 40 therein. This collar 39 is provided with an elongated shank 41 capable of abutting the guide '7 in the manner substantially shown in Fig. 7.

An abutment block 42 somewhat different in construction from the abutment block 21 is associated with the rail on the opposite side thereof from the swingable abutment 3737.

The abutment 42 is provided with lugs 43-43 thereon for engagement into the guide channels 44 on the base 6. Each of the swingable abutments 37 is provided with a bell crank 45, while a pair of recesses 46-46 are provided on the abutment 42. Pivotally connected to each of the bell cranks 45 is a rod 47 which has its free end engaging into the corresponding recess 46.

It can now be seen that when the collar 39 is engaging one of the polygonal-shaped enlargements 38 and has its shank 41 engaged against the guide 7, the shaft will be prevented from rotation and consequently the swingable abutment will be maintained downwardly against the rail 5 in the manner substantially shown in Figs. '7 and -8. However, when the collar39 is removed from the polygonal portion and slid over onto the smooth portion of the shaft 15, the abutments 37 are free to move whe engaged by the wheel of a rolling car.

As the swinging abutments 37-37 are swung backwardly from the rail 5, the consequential shifting of the rods 47 will push the abutments 42 away from the rail 5, permitting the car to pass without obstruction.

As is apparent in Figs. 7 and 8 the same telescopic connection is provided between the abutment 42 and the rear wall (not shown) and in which the coiled spring 36 is provided, (not shown in Figs. '7 and 8).

Fig. 10 discloses an alarm for either the form shown in Figs. 1 and 2 or the form shown in Figs. 7 and 8. Obviously, the view in Fig. 10 shows a duplication of parts of a fragmentary portion of Fig. 3, with the addition of the bracket 48 which supports the stationary contact 49 equipped with the inwardly disposed upper end portion 50 and the upstanding spring finger 51, both of current conductive material.

Numeral 52 represents a battery circuit in which the contacts 50 and 51 are interposed and in which also is the battery 53 and signal lamp 54. Obviously, as the bar 31 passes through the opening in the end wall 27 and passes through the carrier 34, it will engage the spring finger 51 and cause the same to contact with the contact 49, thus closing the alarm .circuit and indicating to an attendant that the stop device is functioning properly.

While the foregoing specification sets forth the invention in specific terms, it is to be understood that numerous changes in the shape, size and materials may be resorted to without departing from the spirit and scope of the invention as claimed hereinafter.

Having thus described my invention, what I claim as new is:-

1. A stop for railroad rolling stock comprising a base, a rotatable shaft mounted on the base, a swingable abutment secured to the shaft and being swingable to a position over a railroad track, a member through which the shaft is freely rotatable, said member being provided with an arm, a projection on the base against which one end of the arm can engage, and means between the shaft and the said member whereby the shaft is locked against rotation when the arm is abutting the projection.

2. A stop for railroad rolling stock comprising a base, a rotatable shaft mounted on the base, a swingable abutment secured to the shaft and being swingable to a position over a railroad track, a member through which the shaft is freely rotatable, said member being provided with an arm, a projection on the base against which one end of the arm can engage, and means between the shaft and the said member whereby the shaft is locked against rotation when the arm is abutting the projection, said means comprising a polygonal formation on the shaft, said member being provided with a polygonal opening therein for receiving the formation when moved to a position engaging the same.

CHESTER PATRICK MULLEN. 

